There are four windows.

有四扇窗户。

youdao

There are four windows in the wall. They are very bright.

教室有四个窗户，非常明亮。

youdao

Do you see those four Windows?

您看见这四扇窗子吗？

youdao

For starters, Lenovo has added four Windows 8 hotkeys to the Function row up top.

ENGADGET: Lenovo ThinkPad Twist review: an old form factor gets new life with Windows 8

"In just the last three days, we have sold four million Windows 8 upgrades, " he said.

BBC: Acer delays Windows RT tablets over Surface concerns

The good news is that more than four million Windows phones were sold in the 3rd quarter of 2012, which represents a 139 percent increase over the same quarter a year ago.

FORBES: Microsoft's Future Looks Grim